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Delaware River Basin NAWQA Study

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Picture showing hydrologists using an electrical shocker to collect biological samples

DELAWARE RIVER BASIN NAWQA WORKPLAN

Delaware NAWQA home page Delaware NAWQA home

USGS IN YOUR STATE

USGS Water Science Centers are located in each state.

There is a USGS Water Science Center office in each State. Washington Oregon California Idaho Nevada Montana Wyoming Utah Colorado Arizona New Mexico North Dakota South Dakota Nebraska Kansas Oklahoma Texas Minnesota Iowa Missouri Arkansas Louisiana Wisconsin Illinois Mississippi Michigan Indiana Ohio Kentucky Tennessee Alabama Pennsylvania West Virginia Georgia Florida Caribbean Alaska Hawaii New York Vermont New Hampshire Maine Massachusetts South Carolina North Carolina Rhode Island Virginia Connecticut New Jersey Maryland-Delaware-D.C.

Surface-Water-Quality Sampling at 10 fixed sites

Started November 1998

Continuous Record

  • All sites - streamflow and temperature
  • Some sites - Ph, Dissolved Oxygen, Specific Conductance, and Turbidity

Discreet Samples

Fixed Interval:
  7 Basic Fixed Sites - once per month
  3 Intensive Sites- up to 4 times per month in late Spring and Summer, monthly otherwise

Storm Sampling at each site:
  Summer - 2 samples
  Rest of year - 2 samples

Water Quality Constituents:

All Sites, Each Visit (At least once per month plus storms):

  • Physical parameters in the field:
     Ph, Alkalinity, Turbidity, Dissolved Oxygen, and Specific Conductance.
  • Nutrients
  • Major Ions
  • Dissolved and Suspended Organic Carbon
  • Suspended Sediment
  • Pesticides (schedule 2001)

Water Quality Constituents:
All Sites, Intermittent sampling

  • Volatile Organics (VOCs) - At least twice per year and during storms.

Water Quality Constituents:
Intensive Sites - started February 1999

  • Sampled up to 4 times per month in late Spring and Summer
  • Same constituents as for Basic Fixed Sites, plus
  • Additional Constituent Analyses:
    Pesticides (schedules 9002, 9060, LCAA) - Each Site Visit
    Volatile Organics (VOCs) - 2 times per month in winter, monthly rest of year.

Bed Sediment and Fish Tissue Sampling at 10 fixed sites

Started Summer 1998

Once per site during occurrence and distribution assessment., constituents:

Bed Sediment:
  Organics
  Trace elements

Fish Tissue
  Organics
  Trace elements


Ecological Sampling at 10 fixed sites

Started Summer 1999

Once per year samples, constituents:

  • chlorophyll A and B - phytoplankton and periphyton
  • Ash free dry mass
  • Invertebrates (RTH,QMH) *
  • Algae (RTH,QMH,DTH,phytoplankton) *
  • Fish community
  • Habitat

* RTH = Richest Target Habitat, QMH = Qualitative Multi-Habitat, DTH = Depositional Targeted Habitat


Groundwater-Quality Sampling for Study-unit Surveys

Water Quality Constituents

All Sites

Physical parameters in the field:

Select wells:
Age Dating (Chloro-flurocarbons, and Helium/Argon)

1999 Synoptic Site Sampling

Water Quality Constituents (Sampled Spring and Late Summer)

Each Site

Physical parameters in the field:

Bed Sediment and Fish Tissue Sampling

Select Sites - 15 Bed Sediment, 10 Fish Tissue, Constituents:

Bed Sediment:

Fish Tissue

Ecological Sampling

  • chlorophyll A and B - periphyton
  • Ash free dry mass
  • Invertebrates - RBP II type sampling
  • Algae (RTH)
  • Modified Habitat

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Page Last Modified: Monday, 14-Jan-2013 10:28:46 EST